438 Coleopterological Notices, IV. 



in the type ; scutelluui, uaesosternal side-pieces and met-episterna posteriorly, 

 densely clothed with recumbent white pubescence. Head sparsely but dis- 

 tinctly punctate toward base and between the eyes, elsewhere entirely impunc- 

 tate ; eyes rather large, moderately prominent, separated by a little less than 

 their own width ; beak very short and robust, barely more than one-half as 

 long as the prothorax, parallel, rather wider than thick, with a large and ex- 

 tremely deep excavation just behind the middle, occupying the entire width, 

 rounded and bounded by an acute densely ciliate edge on the sides and behind, 

 the anterior edge obtuse aud transverse ; bottom of the cavity ascending an- 

 teriorly and feebly bicarinate ; rostral surface between the cavity and apex 

 and also at the sides throughout, strongly though not very densely punctate ; 

 antenna? short, the basal joint of the funicle robust, second slightly elongate, 

 third not quite as long as wide, outer joints thicker, club nearly as long as 

 the preceding six joints, strongly annulated. Prothorax distinctly longer than 

 wide, widest at two-fifths from the base, the sides thence almost straight and 

 very feebly convergent to the broadly arcuate apex, and strongly convergent 

 and constricted to the base, the latter barely three-fifths as wide as the apex ; 

 disk finely but strongly, almost evenly and somewhat closely punctate. Scu- 

 tellum distinct. Elytra scarcely more than one-half longer than the prothorax, 

 and, at base nearly twice as wide as the base of the latter but not wider than 

 the disk, gradually rather strongly inflated posteriorly, and, behind the middle, 

 two-fifths wider than the disk of the prothorax, three-fourths longer than wide, 

 very strongly, evenly convex longitudinally ; humeri rather prominent, nar- 

 rowly rounded, the exposed basal portion oblique ; strise feebly impressed ex- 

 cept toward apex, the punctures small, moderately close-set and distinct. Legs 

 rather long, very slender, the femora linear, scarcely at all sinuate toward apex 

 and completely unarmed ; tarsal claws normal. Length 1.9 mm. ; width 

 0.6 mm. 



Florida. 



The single specimen of this extremely interesting species was 

 taken in the southern part of the State by Mr. F. Kinzel, and very 

 kindly presented to me by Mr. Wilhelm Jiilich. It is related to the 

 Cuban poeyi Chev. in the extraordinary rostral excavation and un- 

 armed femora, but differs in coloration and, probably also, in its 

 smaller size and more sparsely punctate head. It is by far the most 

 minute of our species, and, together with poeyi, might well be 

 separated as a distinct genus. 



OOPTEROTUS n. gen. 



This genus is founded upon a remarkable species described by 

 Dr. Horn under the name Otidocephalas perforatum. It differs 

 from Otidocephalus in having the elytra ovate, rounded on the 

 sides, widest a little before the middle, gradually attenuate and 



